Required information In the double-reduction gear train shown, shaft a is driven by a motor attached...
Required information
In the double-reduction gear train shown, shaft a is driven by a motor attached by a flexible coupling attached to the overhang. The motor provides a torque of 2500 lbf·in at a speed of 1200 rpm. The gears have 20° pressure angles, with diameters shown in the figure. Use AISI 1040 Q and T cold-drawn steel with Sut = 85 kpsi and Sy = 71 kpsi. Design shaft a using a design factor of 1.5.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
If the shaft’s loading is fully reversed and the torque between points B and C is constant, what are the values of the mean and alternating torques and the mean and alternating moments in lbf·in? (You must provide an answer before moving to the next part.)
Tmean = _____ lbf·in
Talternating = _____ lbf·in
Mmean = _____ lbf·in
Malternating = ___ lbf·in
Homework Answers
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Required information
In the double-reduction gear train shown, shaft a is
driven by a motor attached...
A compound epicyclic gear train is shown in the Figure. The shaft P is driven a...
A compound epicyclic gear train is shown in the Figure. The
shaft P is driven a 4000 rpm in the clockwise direction by a motor
of power rating of 10W . The annulus A2 is fixed. The
number of teeth in the gears are , S1,28;
S2,21; A1,72 and A2,99 .
Determine:
The magnitude and direction of the angular velocity of the
shaft Q
The torque required to fix the annulus, A2
A, A₂ P, P2 P P. z S
A compound epicyclic gear train is shown in the Figure. The shaft P is driven at...
A compound epicyclic gear train is shown in the Figure. The
shaft P is driven at 2500 rpm in the clockwise direction by a motor
of power rating 8 kW. The sun S2 is fixed. The number of teeth in
the gears are S1, 34; S2, 21; A1, 86 and A2, 73. Determine
The magnitude and direction of the angular velocity of the
shaft Q and
The torque required to fix the sun, S2
A, Q P S, 5,
2. Gear dynamics. The gear train above is driven on the input shaft with a 0.5...
2. Gear dynamics. The gear train above is driven on the input shaft with a 0.5 hp electric motor. All of the gears have a diametral pitch of 8 teeth per inch. e) What is the transmitted force between Gears 1 and 2, in lbf? f) What is the torque of Gear 1, in in-lbf? g) What is the torque of Gear 2? h) The torque of Gear 2 and 3 are the same. What is the torque of Gear...
2. Gear dynamics. The gear train above is driven on the input shaft with a 0.5...
2. Gear dynamics. The gear train above is driven on the input shaft with a 0.5 hp electric motor. All of the gears have a diametral pitch of 8 teeth per inch. i) What is the ratio of output torque (Gear 4) to input torque (Gear 1)? j) Is it a coincidence that it is the same as the answer in 1 An input shaft drives Gear 1 with 20 teeth at 1800 rpm which mates with the 80-tooth Gear...
2. Gear dynamics. The gear train above is driven on the input shaft with a 0.5...
2. Gear dynamics. The gear train above is driven on the input shaft with a 0.5 hp electric motor. All of the gears have a diametral pitch of 8 teeth per inch. a) What are the diameters of Gears 1, 2, 3, and 4? b) What is the pitch-line velocity of Gear 1, in ft/min? c) Is the pitch-line velocity of Gear 2 the same as Gear 1? d) What is the pitch-line velocity of Gear 3 (and, therefore, Gear...
Homework 6: The figure below shows a gear train where gear 1, on shaft a (input...
Homework 6: The figure below shows a gear train where gear 1, on shaft a (input shaft), drives gear 2 with 32 teeth (denoted 32T) on shaft b, gear 3 (20T) also is on shaft b and drives gear 4 (507) on shaft c (output shaft). The pitch diameter of gears 1 and 2 are d = 24 mm and d = 48 mm. The center distance between gears 3 and 4 (distance between shafts b and c is 70mm....
The shaft shown in the figure is driven by a gear at the right keyway, drives...
The shaft shown in the figure is driven by a gear at the right keyway, drives a fan at the left keyway, and is supported by two deep-groove ball bearings at locations A and B. The shaft is made from AISI 1045 cold-drawn steel. At steady- state speed, the gear transmits a radial load of 300 lbf and a tangential load of 700 lbf at a pitch diameter of 8 in. Assume that the weight and axial load of the...
Design Problem Design a speed reducer gear box that will take 1.5 kW power from an...
Design Problem Design a speed reducer gear box that will take 1.5 kW power from an electric motor rotating at 3000 rpm (clockwise) and deliver it to a machine which operates at 2 different speeds, 1000 rpm (clockwise) and 500 rpm (counter-clockwise). Use Spur Gears with 20° pressure angle and 5mm module. Gear box should be of smallest possible size. The gear shift mechanism is not the part of the design A 2-speed double-reduction speed reducer is shown in the...
A transfer shaft with two spur gears shown below: Input Gear 1 Output Gear Torque Bearing...
A transfer shaft with two spur gears shown below: Input Gear 1 Output Gear Torque Bearing 1 Gear 1 Gear 2 Bearing 2 B OTO 4" 4" 4" 4 . . Weight Ibf Teeth number Pressure angle Po (diametric pitch) teeth/in Gear A 50 20° 6 Gear C 2 25 20° 6 Deep groove ball bearings at B and D. Pitch diameter of the gear is equal to the teeth number divided by diametric pitch. Shaft speed = 3000 rpm....
If using a two-stage planetary gear train, determine the output torque of each shaft In the...
If using a two-stage planetary gear train, determine the output
torque of each shaft
In the proposed plan, an electromotor with a maximum power of 17kw at 1455 rpm is used to supply a gearbox with two output shafts connected to the mills. The motor is connected to the gearbox through a coupling system. Based on the required performance for the system, the first output shaft needs to transmit a power of at most 35% at 365 rpm to the...
A compound epicyclic gear train is shown in the Figure. The
shaft P is driven a 4000 rpm in the clockwise direction by a motor
of power rating of 10W . The annulus A2 is fixed. The
number of teeth in the gears are , S1,28;
S2,21; A1,72 and A2,99 .
Determine:
The magnitude and direction of the angular velocity of the
shaft Q
The torque required to fix the annulus, A2
A, A₂ P, P2 P P. z S
A compound epicyclic gear train is shown in the Figure. The
shaft P is driven at 2500 rpm in the clockwise direction by a motor
of power rating 8 kW. The sun S2 is fixed. The number of teeth in
the gears are S1, 34; S2, 21; A1, 86 and A2, 73. Determine
The magnitude and direction of the angular velocity of the
shaft Q and
The torque required to fix the sun, S2
A, Q P S, 5,
Homework 6: The figure below shows a gear train where gear 1, on shaft a (input shaft), drives gear 2 with 32 teeth (denoted 32T) on shaft b, gear 3 (20T) also is on shaft b and drives gear 4 (507) on shaft c (output shaft). The pitch diameter of gears 1 and 2 are d = 24 mm and d = 48 mm. The center distance between gears 3 and 4 (distance between shafts b and c is 70mm....
The shaft shown in the figure is driven by a gear at the right keyway, drives a fan at the left keyway, and is supported by two deep-groove ball bearings at locations A and B. The shaft is made from AISI 1045 cold-drawn steel. At steady- state speed, the gear transmits a radial load of 300 lbf and a tangential load of 700 lbf at a pitch diameter of 8 in. Assume that the weight and axial load of the...
Design Problem Design a speed reducer gear box that will take 1.5 kW power from an electric motor rotating at 3000 rpm (clockwise) and deliver it to a machine which operates at 2 different speeds, 1000 rpm (clockwise) and 500 rpm (counter-clockwise). Use Spur Gears with 20° pressure angle and 5mm module. Gear box should be of smallest possible size. The gear shift mechanism is not the part of the design A 2-speed double-reduction speed reducer is shown in the...
A transfer shaft with two spur gears shown below: Input Gear 1 Output Gear Torque Bearing 1 Gear 1 Gear 2 Bearing 2 B OTO 4" 4" 4" 4 . . Weight Ibf Teeth number Pressure angle Po (diametric pitch) teeth/in Gear A 50 20° 6 Gear C 2 25 20° 6 Deep groove ball bearings at B and D. Pitch diameter of the gear is equal to the teeth number divided by diametric pitch. Shaft speed = 3000 rpm....
If using a two-stage planetary gear train, determine the output
torque of each shaft
In the proposed plan, an electromotor with a maximum power of 17kw at 1455 rpm is used to supply a gearbox with two output shafts connected to the mills. The motor is connected to the gearbox through a coupling system. Based on the required performance for the system, the first output shaft needs to transmit a power of at most 35% at 365 rpm to the...
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